Retina. Coloured scanning electron micrograph (SEM) of the structure of the eye retina. The light-sensitive retina detects visible images. It consists of many layers of cells,seen here. Light strikes from below. At top is the surface of pigment cells (white). Directly beneath lie close- packed rod and cone cells (pink). More numerous rod cells appear as lighter fibres; cone cells are darker and cone-like. While rod cells detect light intensity,cone cells respond to colour. A deeper layer of round nerve cells transmits impulses from rods and cones to optic nerve fibres (grey,at bottom centre). Magnification: x400 at 6x7cm size. Magnification: x650 at 4x5 inch size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / UNIVERSITY LA SAPIENZA, ROME / DEPT. OF ANATOMY / PROF. P. MOTTA |
Bildgröße: | 3543 px × 2537 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |